Nanna katmaiensis (Malloch 1920) Malloch 1920
- Dataset
- A review of the genera Cleigastra Macquart, Gonarcticus Becker, Gonatherus Rondani, Hexamitocera Becker, Nanna Strobl, Orthacheta Becker and Spathephilus Becker (Diptera, Scathophagidae) of Russia
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Insecta
- order
- Diptera
- family
- Scathophagidae
- genus
- Nanna
- species
- Nanna katmaiensis
discussion
Remarks. The species was recorded by us from the Far East (Ozerov & Krivosheina, 2014 b: 214). During the present study the determination of material was checked and it was discovered that 2 specimens only from Magadan Oblast (♀ from Ust' - Omchug and ♀ from Sokol env.) belong to this species. The rest of specimens proved to be Nanna tibiella (Zetterstedt, 1838).
distribution
Distribution. Russia (Fig. 122): Chukotka, Kamchatka Kray, Magadan Oblast, Tyumen' Oblast. — North America.
materials_examined
Material examined. Chukotka: bank of Anadyr River (64.72 N 175.21 E), 25. VI. – 19. VII. 2014, А. Barkalov (1 ♂, ZMUM); Egvekinot (66.3224 N 179.12 W), 26. VII. 1963, Gorodkov (5 ♂♂, 9 ♀♀, ZISP); Tyumen' Oblast: Neroyka (ca. 64.57 N 59.67 E), 450 m, 24 – 27. VI. 1990, Malozemov (2 ♂♂, ZISP); river mouth of Arkayakha, 85 km NSW of Antipayut (ca. 69.4401 N 74.8555 E), 31. VII. 1977, Gorodkov (1 ♂, ZISP). Diagnostic description. Body-length 4.0 – 6.0 mm. Head. Frons from completely yellow to black, only lower quarter always yellow. 3 orbital setae present. Antenna black. Postpedicel with acutely angled upper apical corner, approximately 2 – 2.5 times as long as wide, in male slightly wider than in female. Thorax black, extensively grey dusted. Proepisternum with hairs in central part. Katepisternum with 3 strong setae, usually black in both sexes. Legs. All coxae blackish; femora blackish in central part and yellow basally and apically; tibiae yellow, sometimes hind tibia darkened on apical half; tarsi slightly darkened. Fore femur with 8 – 12 anteroventral setae (Fig. 117). Hind tibia with apical posteroventral seta, which usually is shorter than anteroventral apical seta. Wing tinged with brownish. Abdomen black, greyish dusted. Male sternite 4 rectangular, approximately 1.5 times as long as wide (Fig. 121). Male sternite 5 with black lobes, as in Fig. 118. Epandrium, cerci and surstyli as in Figs 119, 120. Female sternite 8 as two small separate sclerites.